142 lines
7.6 KiB
C++
142 lines
7.6 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuroraEnum.hpp
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Date: 2021-10-28
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Author: Reece
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***/
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#pragma once
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///////////////////////////////////////////////////////////////////////////////////////////
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/// Configuration
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///////////////////////////////////////////////////////////////////////////////////////////
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#if defined(AUE_OUT_OF_ECOSYSTEM) && defined(__cplusplus)
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#if !defined(AU_LANG_CPP)
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#define AU_LANG_CPP
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#endif
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#if !defined(AUE_NOCPPSTL)
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#include <unordered_map>
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#include <string>
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#include <functional>
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#if !defined(AU_AuHashMap)
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#define AU_AuHashMap
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template<typename T, typename Z>
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using AuHashMap = std::unordered_map<T, Z>;
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#endif
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#if !defined(AU_AuString)
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#define AU_AuString
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using AuString = std::string;
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#endif
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#if !defined(AU_AuConsumer)
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#define AU_AuConsumer
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template<typename ... T>
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using AuConsumer = std::function<void(T...)>;
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#endif
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#endif
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#if !defined(AU_AuUInt)
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#define AU_AuUInt
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using AuUInt = size_t;
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#endif
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#endif
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///////////////////////////////////////////////////////////////////////////////////////////
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/// Utilities
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///////////////////////////////////////////////////////////////////////////////////////////
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/// @hideinitializer
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#define _AUE_BRACKET_SCOPE(...) __VA_ARGS__
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/// @hideinitializer
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#define __AUE_STRIP_BRACKETS(X) X
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/// @hideinitializer
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#define _AUE_STRIP_BRACKETS(X) __AUE_STRIP_BRACKETS(_AUE_BRACKET_SCOPE X)
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/// @hideinitializer
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#define _AUE_EMIT_ARRAY(val) val,
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/// @hideinitializer
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#define _AUE_EMIT_A(val) #val,
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/// @hideinitializer
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#define _AUE_EMIT_D(name, val) name::val,
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/// @hideinitializer
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#define _AUE_EMIT_E(name, val) val,
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/// @hideinitializer
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#define _AUE_EMIT_PAIRNAME(name, val) {#val, name::val},
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/// @hideinitializer
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#define _AUE_EMIT_CALL(name, val) consumer(name::val);
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/// @hideinitializer
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#define _AUE_EMIT_CHECK(name, val) if (codename == #val) {return name::val;}
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///////////////////////////////////////////////////////////////////////////////////////////
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// API
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///////////////////////////////////////////////////////////////////////////////////////////
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#define AUE_DEFINE_VA(name, ...) AUE_DEFINE(name, (__VA_ARGS__))
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#if defined(AU_LANG_CPP)
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#define AUE_DEFINE_DECL_LANG(name, vals) enum class name : AuUInt32 { AU_FOR_EACH(_AUE_EMIT_ARRAY, _AUE_STRIP_BRACKETS(vals)) kEnumCount, kEnumInvalid = (AuUInt32) -1, eEnumInvalid = (AuUInt32)-1, eEnumCount = kEnumCount };
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#define AUE_DEFINE_DECL_EXT(name, vals, ext) enum name : ext { AU_FOR_EACH(_AUE_EMIT_ARRAY, _AUE_STRIP_BRACKETS(vals)) kEnumCount, kEnumInvalid = (ext) -1, eEnumInvalid = (ext)-1, eEnumCount = kEnumCount };
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#else
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#define AUE_DEFINE_DECL_LANG(name, vals) enum name : uint32_ct { AU_FOR_EACH(_AUE_EMIT_ARRAY, _AUE_STRIP_BRACKETS(vals)) k ## name ## EnumCount, k ## name ## EnumInvalid = (uint32_ct) -1, e ## name ## EnumInvalid = (uint32_ct)-1, e ## name ## EnumCount = k ## name ## EnumCount };
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#define AUE_DEFINE_DECL_EXT(name, vals, ext) enum name : ext { AU_FOR_EACH(_AUE_EMIT_ARRAY, _AUE_STRIP_BRACKETS(vals)) k ## name ## EnumCount, k ## name ## EnumInvalid = (ext) -1, e ## name ## EnumInvalid = (ext)-1, e ## name ## EnumCount = k ## name ## EnumCount };
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#endif
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#if defined(AUE_NOCPPSTL)
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#define AUE_DEFINE_BODY(name, vals) \
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inline const char * k ## name ## ToString[static_cast<AuUInt>(name::kEnumCount)] = { AU_FOR_EACH(_AUE_EMIT_A, _AUE_STRIP_BRACKETS(vals)) }; \
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inline const name k ## name ## Values[static_cast<AuUInt>(name::kEnumCount)] = { AU_FOR_EACH_THAT(_AUE_EMIT_D, name, _AUE_STRIP_BRACKETS(vals)) }; \
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inline const char * name ## ToString(name val) { static const char * invalid = "kEnumCount"; if (static_cast<AuUInt>(val) >= static_cast<AuUInt>(name::kEnumCount)) return invalid; return k ## name ## ToString[static_cast<AuUInt>(val)]; } \
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inline bool name ## IsValid(name val) { return static_cast<AuUInt>(val) < static_cast<AuUInt>(name::kEnumCount); } \
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static const AuUInt k ## name ## Count = static_cast<AuUInt>(name::kEnumCount); \
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static const name k ## name ## Invalid = name::kEnumCount; \
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static const name k ## name ## MaxLegal = static_cast<name>(k ## name ## Count - 1); \
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static const name k ## name ## MinLegal = static_cast<name>(0);
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#elif defined(AU_LANG_CPP)
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#define AUE_DEFINE_BODY(name, vals) \
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inline const AuString k ## name ## ToString[static_cast<AuUInt>(name::kEnumCount)] = {AU_FOR_EACH(_AUE_EMIT_A, _AUE_STRIP_BRACKETS(vals))}; \
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inline const name k ## name ## Values[static_cast<AuUInt>(name::kEnumCount)] = {AU_FOR_EACH_THAT(_AUE_EMIT_D, name, _AUE_STRIP_BRACKETS(vals))}; \
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inline const AuHashMap<AuString, name> k ## name ## FromString = {AU_FOR_EACH_THAT(_AUE_EMIT_PAIRNAME, name, _AUE_STRIP_BRACKETS(vals)) { "kEnumCount", name::kEnumCount }}; \
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inline name name ## FromString(const AuString & codename) { AU_FOR_EACH_THAT(_AUE_EMIT_CHECK, name, _AUE_STRIP_BRACKETS(vals)) return name::kEnumCount; } \
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inline name name ## FromHashString(const AuString & codename) { auto itr = k ## name ## FromString.find(codename); if (itr == k ## name ## FromString.end()) return name::kEnumCount; return itr->second; } \
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inline const AuString &name ## ToString(name val) { static const AuString invalid = "kEnumCount"; if (static_cast<AuUInt>(val) >= static_cast<AuUInt>(name::kEnumCount)) return invalid; return k ## name ## ToString[static_cast<AuUInt>(val)]; } \
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inline bool name ## IsValid(name val) { return static_cast<AuUInt>(val) < static_cast<AuUInt>(name::kEnumCount); } \
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inline void name ## ForEach(const AuConsumer<name> &consumer) { AU_FOR_EACH_THAT(_AUE_EMIT_CALL, name, _AUE_STRIP_BRACKETS(vals)) } \
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static const AuUInt k ## name ## Count = static_cast<AuUInt>(name::kEnumCount); \
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static const name k ## name ## Invalid = name::kEnumCount; \
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static const name k ## name ## MaxLegal = static_cast<name>(k ## name ## Count - 1); \
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static const name k ## name ## MinLegal = static_cast<name>(0);
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#elif defined(AU_LANG_C)
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#define AUE_DEFINE_BODY(name, vals) \
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static const char * k ## name ## ToString[(size_ct)(k ## name ## EnumCount)] = { AU_FOR_EACH(_AUE_EMIT_A, _AUE_STRIP_BRACKETS(vals)) }; \
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static const name k ## name ## Values[(size_ct)(k ## name ## EnumCount)] = { AU_FOR_EACH_THAT(_AUE_EMIT_E, name, _AUE_STRIP_BRACKETS(vals)) }; \
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static const char * name ## ToString(name val) { static const char * invalid = "kEnumCount"; if ((size_ct)(val) >= (size_ct)(k ## name ## EnumCount)) return invalid; return k ## name ## ToString[(size_ct)(val)]; } \
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static bool name ## IsValid(name val) { return (size_ct)(val) < (size_ct)(k ## name ## EnumCount); } \
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static const size_ct k ## name ## Count = (size_ct)(k ## name ## EnumCount); \
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static const name k ## name ## Invalid = k ## name ## EnumCount; \
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static const name k ## name ## MaxLegal = (name)(k ## name ## Count - 1); \
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static const name k ## name ## MinLegal = (name)(0);
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#endif
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#define AUE_DEFINE(name, vals) AUE_DEFINE_DECL_LANG(name, vals) AUE_DEFINE_BODY(name, vals)
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#define AUE_DEFINE_EXT(name, vals, ext) AUE_DEFINE_DECL_EXT(name, vals, ext) AUE_DEFINE_BODY(name, vals)
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#define AUE_ITERATE(name, index) name index = static_cast<name>(0); static_cast<AuUInt>(index) < static_cast<AuUInt>(name::kEnumCount); index = static_cast<name>(static_cast<AuUInt>(index) + 1) |